BMPs

The assigned TP removal rates can be used with the Virginia Runoff Reduction Method (VRRM) spreadsheets to show compliance with water quality requirements.

There are 15 practices listed in subsection 9VAC25-870-65 of the VSMP regulation. Design specifications for these practices are provided as PDF documents and are listed by year of publication.

Additional practices approved by DEQ in accordance with procedures established by the department are also listed. Practice 16 includes manufactured treatment devices (MTDs) that are hydrodynamic devices, and practice 17 includes MTDs that are filtering devices.

A VSMP authority may establish limitations on the use of specific BMPs in accordance with §62.1-44.15:33 of the Code of Virginia.

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• Introduction
• Practice 1: Rooftop (Impervious Surface) Disconnection
• Practice 2: Sheet Flow to Veg. Filter Strip/Conserved Open Space
• Practice 3: Grass Channels
• Practice 4: Soil Compost Amendment
• Practice 5: Vegetated Roof
• Practice 6: Rainwater Harvesting
  • Cistern Design Excel Spreadsheet, v. 2.2 (June 12, 2013; file size: 22 MB — Note: Enable editing to change values within input cells.)
  • Technical Memorandum: Virginia Rainwater Harvesting (March 25, 2013; pdf)
• Practice 7: Permeable Pavement
• Practice 8: Infiltration Practices
• Practice 9: Bioretention (including Urban Bioretention)
• Practice 10: Dry Swales
• Practice 11: Wet Swales
• Practice 12: Filtering Practices
• Practice 13: Constructed Wetlands
• Practice 14: Wet Ponds
• Practice 15: Extended Detention (ED) Ponds

Note: The appendices were not updated in the draft 2013 design specifications.  See the 2011 Design Specifications for Practices 1-15 for the following appendices:

• Appendix A: Earthen Embankment
• Appendix B: Principal Spillway
• Appendix C: Vegetated Emergency Spillway
• Appendix D: Sediment Forebay
• Appendix E: Landscaping

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• Practice 1: Rooftop (Impervious Surface) Disconnection
• Practice 2: Sheet Flow to Veg. Filter Strip/Conserved Open Space
• Practice 3: Grass Channels
• Practice 4: Soil Compost Amendment
• Practice 5: Vegetated Roof
• Practice 6: Rainwater Harvesting
  • Cistern Design Excel Spreadsheet, v. 2.2 (June 12, 2013; file size: 22 MB — Note: Enable editing to change values within input cells)
  • Technical Memorandum: Virginia Rainwater Harvesting (March 25, 2013; pdf)
• Practice 7: Permeable Pavement
• Practice 8: Infiltration Practices
• Practice 9: Bioretention (including Urban Bioretention)
  • Bioretention Photo Tutorial (pdf)
• Practice 10: Dry Swales
• Practice 11: Wet Swale
• Practice 12: Filtering Practices
• Practice 13: Constructed Wetlands
• Practice 14: Wet Pond
• Practice 15: Extended Detention (ED) Pond

Appendices

• Appendix A: Earthen Embankment
• Appendix B: Principal Spillway
• Appendix C: Vegetated Emergency Spillway
• Appendix D: Sediment Forebay
• Appendix E: Landscaping

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• Practice 16: MTD/proprietary BMP: Hydrodynamic Devices
  • List of Prior-approved Hydrodynamic Devices
• Practice 17: MTD/proprietary BMP: Filtering Devices
  • List of Prior-approved Filtering Devices

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